Monday, December 8, 2014

In my video on the Crookes Radiometer, I showed that the devices spins because of a thermal gas effect -- not the force of photons hitting the vanes. In the comments section, someone asked about kinetic energy and how incoming photons impart force to the rotor. This video is a more complete answer to that question.

Monday, December 1, 2014

A burning strip of carefully cut flash paper can encode information, which is then read by an optical sensor. I'd like to determine if it's possible to perform computations with nothing but flash paper -- using the shape of the paper as data and program, and the flame as the readout.